Mower guard



C. PEARSON Feb. 23, 1932.

MOWER GUARD Filed Jan. 20, 1930 Izzy/715207" C /zarzefi P4607 071 3/ W Patented Feb. 23, 1932 UNITED STATES PATENT OFFICE CHARLES PEARSON, OF GICERO, ILLINOIS, ASSIGNOR TO INTERNATIONAL HARVESTER COMPANY, A CORPORATION OF NEW JERSEY MOWER GUARD Application filed January 20, 1930.

This invention relates to a guard such as used in various forms of harvesters, as for example mowers, grain binders, and the like. Particularly the invention relates to a sim plified and improved construction of guard made in a manner to permit the ledger surface thereof to be forged, thereby simplifying its manufacture and lowering its production cost. The structure also involves an improved lip and ledger plate mounting for the guard.

The objects of the invention are to provide an improved guard of the kind stated, which may be more cheaply produced by permitting the ledger surface thereof to be forged; to provide an improved lip construction for such a guard; and, lastly, to provide an improved construction of a ledger plate and the manner of its mounting on the guard.

Other objects will be apparent to those skilled in the art as this disclosure is made.

Briefly these desirable objects may be achieved in the preferred example of the invention herein to be disclosed by providing a guard having a body formed with a shoulder at its top side, said shoulder including a socket into which is anchored a separable guard lip, said lip in the process of manufacture being left off to leave a free and unobstructed surface on the body of the guard to permit said surface to be readily forged for the reception of a ledger plate. The structure also includes an improved form of ledger plate having a shoulder adapted to abut the shoulder on the body of the guard, said shoulder having an opening therein through which is passed the anchoring end of the lip, and in this manner the led er )late ma be ulled and. wedged into a l Y P c proper pos1tion to hold the same securely on the guard.

In the accommpanying sheet of drawings illustrating one form of the invention by way of example,-

Figure 1 is a top plan view of the improved guard;

Figure 2 is a side view;

Figure 3 is a plan view of the ledger plate, per se; and,

Serial No. 421,903.

Figure 4 is a fragmentary side view, showthe ledger plate in section.

In most respects the guard assumes a conventional form and includes a body with a heel 11 for aflixation to a cutter bar, the body of the guard in the usual way being formed hollow as at- 12 to make the same as light as possible and to save metal. The point of the guard is shown at 13.

In standard guards, the lip is formed as an integral part of the guard, usually by casting. In this construction the guard is formed initially without a lip and in lieu thereof said body 10 is provided on its upper side with an inclined shoulder 14, said shoulder having formed therein a threaded socket 15. As the guard body is thus formed without a lip, it is possible conveniently to forge the ledger surface 16 on its top side, as no lip is present which would act as an obstruction to the passage of a die to said surface. Accordingly, a difficult machining operation is unnecessary and the simple forging step may be substituted therefor, which obviously results in simplifying the process of manufacture and lowering the cost of the guard. The body of the guard also includes the usual lateral extensions or wings 17, which function as spacers or abutments for adjoining guards when they are mounted on a cutter bar.

After the ledger surface 16 has been forged, a novel form of ledger plate 18 is provided, which plate is provided at its back end with an elongated opening or slot 19 centrally disposed therein, while at its other end said ledger plate is formed with an upstanding shoulder 20 slightly inclined toagree with the inclined shoulder 14 on the body 10. Said inclined extension of the shoulder 20 is formed with an opening 21 to fit over and register with the socket 15. A headed rivet pin 22 passes up centrally through the body of the guard with the head of the pin or rivet 22 fitting in the slot 19 of the ledger, thus preventing sidewise displacement of the ledger. The slot 19 is elongated so that the ledger plate may be slid longitudinally along the ledger surface 16.

Next is provided a lip member 23 which, as shown in Figure 2, preferably assumes a cylindrical rod-like form and is provided with a wrench engaging portion 24, an end of said rod being threaded to anchor in the threaded socket 15. A split, spring washer 25 may also be provided to make a secure locking arrangement when the lip 23 is threaded through the opening 21 in the ledger plate 18 and is screwed down fast into the socket in the body 10. As the lip 23 is turned down, obviously the ledger plate 18 is wedged and drawn along the ledger surface, so that the inclined extension 20 thereof tightly fits against the inclined shoulder 14 of the body 10 in an obvious manner.

In practice the body 10 may be formed in any appropriate manner, such as by casting, for example. As the body is lipless, of course, the ledger surface 16 can conveniently be forged. The ledger plate 18 is then arrangedover the pin 22 and the lip 23 is then threaded through the opening 21 of said ledger l8, and the assembly is completed by screwing the threaded end of the. lip into the socket 15 of the body, thereby securely and 1 detachably associating both the ledger and the lip with respect to the body.

From this detailed description is must now be apparent that an improved form of guard has been provided which achieves all of the desirable objects of this invention as heretofore pointed out.

It is the intention to cover all such changes and modifications of the preferred example herein shown as do not materially depart from the spirit and scope of the invention as is indicated in the following claims.

lVhat is claimed is:

1. In a mower guard, a body provided with a shoulder at its top side, a ledger plate carrie-d on the body, said ledger plate having an an ularly disposed upturned shoulder adapted to abut the body shoulder, and a guard lip having a lengthwise integral extension passed through an opening in the ledger plate shoulder and anchored securely in the body and through said guard shoulder to hold the ledger plate in place.

2. In a mower guard, a body provided with a shoulder at its top side, a ledger plate carried on the body, said ledger plate having a shoulder adapted to abut the body shoulder, and a guard lip having a threaded extension passed through an opening in the ledger plate shoulder and threaded securely in a threaded socket in said guard shoulder to hold the ledger plate in place.

3. In a mower guard, 21 body provided with a shoulder at its top side, a rivet pin in said body and extending above the top thereof, a ledger plate having an elongated opening fitted over said pin, said plate also having a shoulder adapted to abut the body shoulder, and a lip member having an extension adapted to pass through an opening in the ledger plate shoulder, said extension being anchored in the body shoulder to draw up and hold the ledger plate securely in place.

4:- In a mower guard, a body provided with a shoulder at its top side, a rivet pin in said body and extending above the top thereof, a ledger plate having an elongated opening fitting over said pin, said plate also having a shoulder adapted to abut the body shoulder, and a lip member having a threaded extension and a wrench engaging portion, said threaded extension adapted to be passed through an opening in the ledger plate shoulder and into a threaded socket in said body shoulder whereby to draw up the ledger plate and hold the same securely in place.

5. A mower guard having a body and a detachable ledger plate, and a lip member comprising a rod having an integral lengthwise threaded anchoring extension adapt-ed for securement in a socket formed in the guard body, said extension and lip acting to clamp the ledger plate to the body.

6. A mower guard having a body and a ledger plate, a separate lip member for said body, and an integral lengthwise extension included in the lip member for connecting the lip to said body by means of a socket formed in the body to receive said extension, said extension and lip member also acting on the ledger plate to secure the same in position on the body.

In testimony whereof I aflix my signature.

; CHARLES PEARSON. 

